diff --git a/testing/web-platform/tests/resource-timing/iframe-redirect-without-location.html b/testing/web-platform/tests/resource-timing/iframe-redirect-without-location.html
new file mode 100644
index 0000000000000..bae5f3112fe29
--- /dev/null
+++ b/testing/web-platform/tests/resource-timing/iframe-redirect-without-location.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Test the sequence of events when reporting iframe timing.</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/resource-loaders.js"></script>
+<body>
+<script>
+    promise_test(async t => {
+        const href = new URL('resources/redirect-without-location.py', location.href);
+        await load.iframe(href);
+        const entries = performance.getEntriesByType('resource').filter(({name}) => name.startsWith(href));
+        assert_equals(entries.length, 1);
+        assert_equals(entries[0].initiatorType, 'iframe');
+    }, 'Iframes should report resource timing for redirect responses without a location');
+</script>
+</body>
\ No newline at end of file
diff --git a/testing/web-platform/tests/resource-timing/resources/redirect-without-location.py b/testing/web-platform/tests/resource-timing/resources/redirect-without-location.py
new file mode 100644
index 0000000000000..eef1df858b9fd
--- /dev/null
+++ b/testing/web-platform/tests/resource-timing/resources/redirect-without-location.py
@@ -0,0 +1,2 @@
+def main(request, response):
+      response.status = 302
